vega.uplink.pointing.attitudes

Class IlluminatedPoint

java.lang.Object

CompositeDataset

vega.uplink.pointing.PointingElement

vega.uplink.pointing.PointingAttitude

vega.uplink.pointing.attitudes.IlluminatedPoint

public class IlluminatedPoint
extends PointingAttitude

Points the boresight to an illuminated point of the comet surface. The illuminated point is the mid-point (in terms of angle as seen from the SC) between a point on the terminator and the illuminated limb. The point on the terminator and limb are chosen in the comet-sun-SC plane.

Field Summary

Fields inherited from class vega.uplink.pointing.PointingAttitude

ATTITUDE_TAG, POINTING_ATTITUDE_TYPE_CAPTURE, POINTING_ATTITUDE_TYPE_ILLUMINATEDPOINT, POINTING_ATTITUDE_TYPE_INERTIAL, POINTING_ATTITUDE_TYPE_LIMB, POINTING_ATTITUDE_TYPE_SPECULAR, POINTING_ATTITUDE_TYPE_TERMINATOR, POINTING_ATTITUDE_TYPE_TRACK, POINTING_ATTITUDE_TYPE_VELOCITY, POWEROPTIMIZED_TAG, REF_TAG

Constructor Summary

Constructors

Constructor and Description
IlluminatedPoint()
IlluminatedPoint(Boresight boresight, PhaseAngle phaseAngle, Surface surface) Creates an attitude pointing the boresight to an illuminated point of the comet surface.
IlluminatedPoint(Boresight boresight, PhaseAngle phaseAngle, Surface surface, OffsetAngles oAngles) Creates an attitude pointing the boresight to an illuminated point of the comet surface.
IlluminatedPoint(Boresight boresight, PhaseAngle phaseAngle, Surface surface, OffsetAngles oAngles, OffsetRefAxis oRefAxis) Creates an attitude pointing the boresight to an illuminated point of the comet surface.
IlluminatedPoint(PointingElement org)
IlluminatedPoint(Surface surface) Creates an attitude pointing the boresight to an illuminated point of the comet surface.

Method Summary

Methods

Modifier and Type	Method and Description
IlluminatedPoint	copy()
Surface	getSurface()
void	setSurface(Surface surface)

Methods inherited from class vega.uplink.pointing.PointingAttitude

getAttitudeType, getBoresight, getOffsetAngles, getOffsetRefAxis, getPhaseAngle, setBoresight, SetOffset, setPhaseAngle

Methods inherited from class vega.uplink.pointing.PointingElement

addAttribute, addChild, asDataset, copyFrom, equals, getAttribute, getAttributes, getChild, getChildren, getDescription, getFirstLevelTextContent, getName, getValue, hasAttributtes, hasChildren, readFrom, regenerate, removeAttribute, removeAttribute, setDescription, setValue, toString, toStringParameter, toXml, validate

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

IlluminatedPoint

public IlluminatedPoint(PointingElement org)

IlluminatedPoint

public IlluminatedPoint(Boresight boresight,
                PhaseAngle phaseAngle,
                Surface surface,
                OffsetAngles oAngles,
                OffsetRefAxis oRefAxis)

Creates an attitude pointing the boresight to an illuminated point of the comet surface. The illuminated point is the mid-point (in terms of angle as seen from the SC) between a point on the terminator and the illuminated limb. The point on the terminator and limb are chosen in the comet-sun-SC plane.

Parameters:

boresight - Vector defined in SC frame that shall be pointed to the target

phaseAngle - Rule that fixes the degree of freedom around the boresight.

surface - Elliptical surface

oAngles - OffsetAngles

oRefAxis - defines together with the boresight two axes in SC frame around which the rotations are performed. offsetRefAxis is of type direction vector. In the following these axes are called offset-x-axis and offset-y-axis. The offset-y-axis is the unit vector along the cross product of boresight and offsetRefAxis. The offset-x-axis is defined such that offset-x-axis, offset-y-axis and boresight form a right handed orthogonal frame. If for offsetRefAxis a direction vector is specified that is defined relative to inertial frame then it is converted to SC frame by using the basic pointing without offset rotations. The resulting SC attitude with offset rotations is given by the basic pointing rotated right handed first around the offset-x-axis by minus the y-angle and then a right handed rotation around the offset-y-axis by the x-angle. This convention is chosen because a positive x and y-angle rotate the boresight towards the offset-x-axis and y-axis, respectively

IlluminatedPoint

public IlluminatedPoint(Boresight boresight,
                PhaseAngle phaseAngle,
                Surface surface,
                OffsetAngles oAngles)

Creates an attitude pointing the boresight to an illuminated point of the comet surface. The illuminated point is the mid-point (in terms of angle as seen from the SC) between a point on the terminator and the illuminated limb. The point on the terminator and limb are chosen in the comet-sun-SC plane.

Parameters:

boresight - Vector defined in SC frame that shall be pointed to the target

phaseAngle - Rule that fixes the degree of freedom around the boresight.

surface - Elliptical surface

oAngles - OffsetAngles

IlluminatedPoint

public IlluminatedPoint(Boresight boresight,
                PhaseAngle phaseAngle,
                Surface surface)

Creates an attitude pointing the boresight to an illuminated point of the comet surface. The illuminated point is the mid-point (in terms of angle as seen from the SC) between a point on the terminator and the illuminated limb. The point on the terminator and limb are chosen in the comet-sun-SC plane.

Parameters:

boresight - Vector defined in SC frame that shall be pointed to the target

phaseAngle - Rule that fixes the degree of freedom around the boresight.

surface - Elliptical surface

IlluminatedPoint

public IlluminatedPoint(Surface surface)

Creates an attitude pointing the boresight to an illuminated point of the comet surface. The illuminated point is the mid-point (in terms of angle as seen from the SC) between a point on the terminator and the illuminated limb. The point on the terminator and limb are chosen in the comet-sun-SC plane.

Parameters:

surface - Elliptical surface

IlluminatedPoint

public IlluminatedPoint()

Method Detail

setSurface

public void setSurface(Surface surface)

getSurface

public Surface getSurface()

copy

public IlluminatedPoint copy()

Overrides:

copy in class PointingAttitude